2005 Jeep Grand Cherokee lighting problems

2005 jeep has been slipping into neutral since february 2013. It caused me to have an accident because I couldn't get out of the way of rear-oncoming traffic. No major damage was done thankfully! A few weeks later I experienced a rollaway. I went into the sitter to pick up my son. After about 5 minutes of being inside I my jeep roll across the street! I go running outside, opened the door and pulled up the emergency break...just missing an embankment!

At random times while driving, while in park, and just after startup, all dashboard gauges, lights, and power goes out, headlights turn off, but the engine still runs. I cannot see what is in front of me at night, I cannot tell my speed, I cannot see my fuel level, etc. The outage lasts from 2-30 seconds before every single warning light will illuminate for a few seconds, or flicker on and off, and then return to normal. I replaced the ignition 2 years ago from a previous recall notice.